Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 3

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.selectiontools.app.extension.tools.behavior;

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 * 

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 * 

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *  

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 

 * MA  02110-1301, USA.

 * 

 */

import java.awt.Color;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.Point;

import java.awt.Rectangle;

import java.awt.event.MouseEvent;

import java.awt.geom.Arc2D;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

import java.awt.image.BufferedImage;

import org.gvsig.fmap.mapcontext.ViewPort;

import org.gvsig.fmap.mapcontrol.tools.BehaviorException;

import org.gvsig.fmap.mapcontrol.tools.Behavior.CircleBehavior;

import org.gvsig.fmap.mapcontrol.tools.Events.MeasureEvent;

import org.gvsig.fmap.mapcontrol.tools.Listeners.CircleListener;

/**

 * 

 * 

 * @author Pablo Piqueras Bartolom? (pablo.piqueras@iver.es)

 */

public class CircleSelectionBehavior extends CircleBehavior {

    /**

         * 

         */

    private CircleListener listener;

    /**

     * Auxiliary point that represents a corner selected in image coordinates.

     */

    private Point2D m_PointAnt;

    public CircleSelectionBehavior(CircleListener zili) {

        super(zili);

        listener = zili;

    }

    /*

     * (non-Javadoc)

     * 

     * @see

     * com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#paintComponent(java.awt

     * .Graphics)

     */

    public void paintComponent(Graphics g) {

        double radio;

        BufferedImage img = getMapControl().getImage();

        g.drawImage(img, 0, 0, null);

        g.setColor(Color.black);

        g.setXORMode(Color.white);

        if ((m_FirstPoint != null) && (m_LastPoint != null)) {

            radio = m_LastPoint.distance(m_FirstPoint);

            Arc2D.Double arc =

                new Arc2D.Double(m_FirstPoint.getX() - radio,

                    m_FirstPoint.getY() - radio,

                    2 * radio,

                    2 * radio,

                    0,

                    360,

                    Arc2D.OPEN);

            ((Graphics2D) g).draw(arc);

        }

    }

    /*

     * (non-Javadoc)

     * 

     * @see

     * com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#mousePressed(java.awt

     * .event.MouseEvent)

     */

    public void mousePressed(MouseEvent e) {

        if( !this.isMyButton(e) ) {

            return;

        }

        Point pScreen = e.getPoint();

        m_PointAnt = pScreen;

        if ((!isClicked) && (e.getButton() == MouseEvent.BUTTON1)) {

            m_PointAnt = pScreen;

            m_FirstPoint = m_PointAnt;

            isClicked = true;

        }

        if (listener.cancelDrawing()) {

            getMapControl().cancelDrawing();

            isClicked = false;

        }

        getMapControl().repaint();

    }

    /*

     * (non-Javadoc)

     * 

     * @see

     * com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#mouseReleased(java.awt

     * .event.MouseEvent)

     */

    public void mouseReleased(MouseEvent e) throws BehaviorException {

        if( !this.isMyButton(e) ) {

            return;

        }

        if ((m_FirstPoint == null) || (m_LastPoint == null))

            return;

        Point2D p1;

        Point2D p2;

        Point pScreen = e.getPoint();

        ViewPort vp = getMapControl().getMapContext().getViewPort();

        p1 = vp.toMapPoint(m_FirstPoint);

        p2 = vp.toMapPoint(pScreen);

        // Fijamos el nuevo extent

        Rectangle2D.Double r = new Rectangle2D.Double();

        r.setFrameFromDiagonal(p1, p2);

        Rectangle2D rectPixel = new Rectangle();

        rectPixel.setFrameFromDiagonal(m_FirstPoint, pScreen);

        Double[] x = new Double[2];

        Double[] y = new Double[2];

        x[0] = new Double(p1.getX());

        x[1] = new Double(p2.getX());

        y[0] = new Double(p1.getY());

        y[1] = new Double(p2.getY());

        MeasureEvent event = new MeasureEvent(x, y, e);

        listener.circle(event);

        getMapControl().repaint();

        m_FirstPoint = null;

        m_LastPoint = null;

        isClicked = false;

    }

    /*

     * (non-Javadoc)

     * 

     * @see

     * com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#mouseDragged(java.awt

     * .event.MouseEvent)

     */

    public void mouseDragged(MouseEvent e) throws BehaviorException {

        mouseMoved(e);

    }

    /*

     * (non-Javadoc)

     * 

     * @see

     * com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#mouseMoved(java.awt.event

     * .MouseEvent)

     */

    public void mouseMoved(MouseEvent e) throws BehaviorException {

        if (!isClicked)

            return;

        m_LastPoint = e.getPoint();

        if (m_FirstPoint == null)

            return;

        Point2D p1;

        Point2D p2;

        Point pScreen = e.getPoint();

        ViewPort vp = getMapControl().getMapContext().getViewPort();

        p1 = vp.toMapPoint(m_FirstPoint);

        p2 = vp.toMapPoint(pScreen);

        // Fijamos el nuevo extent

        Rectangle2D.Double r = new Rectangle2D.Double();

        r.setFrameFromDiagonal(p1, p2);

        Rectangle2D rectPixel = new Rectangle();

        rectPixel.setFrameFromDiagonal(m_FirstPoint, pScreen);

        Double[] x = new Double[2];

        Double[] y = new Double[2];

        x[0] = new Double(p1.getX());

        x[1] = new Double(p2.getX());

        y[0] = new Double(p1.getY());

        y[1] = new Double(p2.getY());

        MeasureEvent event = new MeasureEvent(x, y, e);

        listener.circle(event);

        getMapControl().repaint();

    }

}